Rotary Trimmers United Rotary Paper Trimmers use a self-sharpening revolving blade that slides along a track making cuts in both directions. United Rotary Trimmers range from tabletop to larger, professional models. The larger trimmers include a solid steel stand, with a fabric catch tray for easy cleanup of paper trimmings. United rotary trimmers feature printed guides on the base for proper alignment and a paper clamp to hold the paper in place while cutting. United’s Rotary Trimmer line is ideal for offices, print shops and design studios. Let us help you choose the right paper trimmer for you. Also, learn how to get the most out of your rotary trimmer.